Fix LiveFrost dependency to use podspec instead of copied files. Fix high CPU issue caused by LiveFrost by disabling live blurring

Author: RJ Walsh

CXAlertView.podspec

@@ -10,4 +10,5 @@ Pod::Spec.new do |s|
   s.platform     = :ios, '5.0'
   s.framework    = 'QuartzCore', 'CoreGraphics', 'Accelerate'
   s.requires_arc = true
+  s.dependency 'LiveFrost', '~> 1.1'
 end